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Nitrite can be deadly for fish in very minor amounts. Standard nitrite tests for aquaristic purposes often have a very short useful life or are quite imprecise. The Visocolor ECO tests by Macherey-Nagel are colorimetric and unite a high precision with a long useful life. They are excellent for exact determination of the nitrite levels in an aquarium.
In acidic solution sulphanilic acid or sulphanilamide are diazotised with nitrite. The diazonium salt is then coupled to form an intensely coloured azo dye.
- Measuring range: 0 · 0,02 · 0,03 · 0,05 · 0,07 · 0,1 · 0,2 · 0,3 · 0,5 mg/l NO2-
- Sufficient for 120 tests
- Suitable for seawater: yes
- Suitable for PF-12
The Germany company Macherey-Nagel GmbH & Co. KG has a long tradition, as it was founded in 1911. This company is an important manufacturer of chemical analytic products for professional use. Due to its specialisation in water tests, Macherey-Nagel is able to offer a vast product range particularly suitable for aquascapes and planted tanks. In the aquascaping and planted tank hobby, the colorimetric line of water tests Visocolor has gained a very good reputation, as these tests are very exact and have a long useful life.
Compared with many water test manufacturers that produce purely for aquaristic purposes, the knowledgeable customer service offered by Macherey-Nagel is on another level. This company helps their customers very well should they happen to run into a problem. For those interested in precise water tests the products by Macherey-Nagel are recommended as they will definitely meet their expectations.